Steam pumping-engine.



PATENTED JULY 81}. 1906.

' J. A. GROSHON.

STEAM PUMPING ENGINE.- APPLIOATION FILED 153F127, 19Q5.

@TNESSES: I

27210 .ZZ fires/2012 THE NORRIS PETERS 00, WASHINGTON, n; c.

T PATENTEDJULY 31-, 1906.

E T. A. GROSHON." L STEAM PUMPING ENGINE. APPLICATION FILED SEPT.27.1905.

3 SHEETS-SEEM s.

' WITNESSES:

BY I,

ATTORNEY UNITED srArns PATENT oFFIoE.

JOHN A. eRos'HoN, or NEW YoRK, N. Y.

i no. 827,149.,

Specification of Letters latent. K Application filed September 27,1905. Serial No. 280,275-

f STEAM PUMPING-ENGINE.

-' Patented July 31, I906.

To all whom it may concern:

Be it known that I, Jornv AgGnosnon, a citizen of the United States, and a resident, of New York, in the county of New York and State of-jNeW York, haveinvented certain new, and useful Improvements in Steam Pumping-Engines, of which the followingis a specification.

pumping-en ines and it consists in the novel 711,702, granted October 21, 1902, to myself,

the water is drawn into the pump-chamber by the vacuum or suction created by the pump-plunger on its backward movement and is discharged by the plunger'during the forward stroke of the latter, suitable valves being provided at the inlet and discharge.

sides of said chamber for controlling the flow of the water. One great difficulty in the use of these steam pumping-en ines, especially in gan or fpipe well systems ue to the neces-v sary li t 0 water by suction, arises from the inability of the pump -plun er to create the necessary vacuum require sequence of which the pump will not work quietly nor perform its full duty. In addition, air gathers in the cylinder and frequently the inlet-valves will not close until the plunger starts on its forward throw, when said valves will close with more or less of a slam, which is objectionable. It is obvious that unless during each backward stroke of the plunger the cylinder becomes filled with water there will be an inefficient and undesirable action of the pump, and this difiiculty of securing the filling of the cylinder during each backward stroke of the plunger is one which has frequently been experienced, especially in instances'in which .an extreme lift is required to be effected by the suction created 2 a by the moving plunger.

The object of my invention is to produce means whereby without material change in the pump or materially adding to the cost of its manufacture the cylinder will become properly filled with water during the backward movement of the plungerand the inlet or suction valves will be caused to close natu The invention relates to improvements in .rally and at the proper time, whereby the efiiciency of the pump is'enhanced and its operation attended by less noise.

In carrying out my invention I connect the cylinder directly with auxiliary vacuum-pro' ducing means and control theconnection by mit the vacuum to act in conjunction with the plunger: during the backward stroke of the same, and I equip said valve with suitable gearing based on the Corliss principle for cutting 0H the vacuum at the pro er time,

so that the water drawn into the cy inder bythe vacuum may producing means.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of the pump end of. a steam pumping-engine equipped with my not pass into the vacuum invention. Fig. 2 1s an end view of same. Fig. 3 is an enlarged vertical longitudinal sec Ition on the dotted line 3 3 of Fi valve intermediatethe pump-0y 1nder and Fig. 3, and Fig. 5 is an enlarged elevation of the valve-gear. for adequately filling the pump chamber or cylinder, in con- In the drawings, 10 represents a suitable a suitable valve timed by the engine to per* 1 of the i foundation for the steam pumping-engine, 1 1

the pump-casing, 12 the pump-plunger, 13

the plunger-rods, and 14 a cross-head connectin said rods, all of said parts being usual orm and construction and said pump- .casin containing the usual water chamber or 'cylin er and inlet 'or suction and' discharge valves.

The steam pumping-engine will embody several pump-casings and a corresponding number of steam-cylinders, as usual and as shown in my aforesaid patent, No. 711,702

but the dpresent'inventionlmay be fully understoo by a consideration of one pum casing without regard to the details of t e steam-cylinders and their .coacting parts,

since I do not change the construction of the pump-casing orits parts, but add thereto the features constituting my invention.

Upon theside of the upper portion of the pump-casing 11 I secure'a valve-casing 15, containing a rotary valve 16 and communicating with the pump-cylinder and also, through a pipe;1 7, with any suitable means for creating avacuum, the valve 16 determining byltsposition when the vacuum thus created shall IIO 4o shaft 23.

act to draw the water into said cylinder. The casing 15 is cylindrical in cross-section. It has heads at its ends, as shown in Fig. 3, and it is provided with a nozzle 18 to receive the pipe 17 and with ports 19, leading to the pump-cylinder. Within the casing is a cylindrical valve member 20, having ports 21 and closely engaging the end portions of said casing, while intermediate said end por- 1o tions an annular chamber 22 is formed between said member and the inner walls of said casing, said chamber being in constant communication with said ports. The valve 16 is secured upon a shaft 23, and it contains I 5 ports 24 in its cylindrical Walls and ports 25 in its ends. The valve 16 closely fits within the valve member 20, and it is adapted to have its ports 24 moved into register with the ports 21 of said member, and thus establish 20 communication between the vacuum-creating means and the interior of the pump-cylinder. When the valve 16is in the position shown in Fig. 4, it cuts off communication between the vacuum-creating means and the 2 5 pump-cylinder, and said valve will always be in such position during theforward stroke of the plunger 12.

The valve 16 is turned to its open position, that is to carry its ports 24 into register with 3 the ports 21 of the valve member 20, from the main shaft 26 and the eccentric 27 thereon through the connecting-rod 28, pivoted lever-arm 29, link 30, and bell-crank 3 1, which is freely mounted on the valve-shaft 23, and has one of its arms pivotally connected with whereby the said arm, acting through the shaft 23,is caused to turn the valve 16 to its open position. The crank-arm 34 is connected by a rod 35 with a dash-pot 36 of usual character. Upon the shaft 23 is freely mounted a crank-arm 37, carrying a cam 38 5c and connected with an adjusting-rod 39,

which is threaded at its outer end and is enaged by an adjusting wheel or nut 40, coned between fixed parts 41. When the wheel or nut 40 is rotated, it will shift the rod 39, and thereby move the arm 37 for setting the cam 38 in just the desired position for it to be engaged at the proper time by the cam or stud on the forked latch 32 during the upward movement of the latter for the pur- 6.0 pose of compelling the release by the catch 32 of the stud 33 and permitting theclosing of the valve 16, due to the downward movement of the crank-arm 34, whereby the vacuum-creating means is cut off from com- .65 munication with the interior of the pumpcylinder. The bell-crank 3 1, latch 32, crankarm 34, releasing-cam 38, and dash-pot 36 form a valve-gear of the well-known Corliss principle, and the exact point of release may be adjusted by means of the rod 39 and adjusting wheel or nut 40, it being the purpose to cutoff the vacuum from the pump-cylinder after the same becomes filled and before the water is drawn by the vacuum into the connections leading to the vacuum-producing means. The eccentric 27 thus opens the valve 16 as the pump-plunger finishes its forward stroke, so that the auxiliary vacuum may act to draw the water into the pumpcylinder during the backward stroke of said plunger, and at the proper time said valve is released to close, said valve remaining closed during the forward stroke of the said plunger.

The vacuum pipe 17 may lead from any convenient vacuum-creating means, such as a vacuum tank or pump, or from the condenser of the engine when a condensing-engine is made use of.

In carrying out my invention I do not materially vary the known construction of steam pumping-engines, but add thereto the valve 16 and its operating-gear, connected with the eccentric on the main shaft, which, as usual, handles the engine-valves, and connect the chamber of said valve with means for creating a vacuum suflicient to properly fill the pump-cylinder with water during the backward stroke of the plunger. The special construction of valve 16 presented is of importance on account of its efficiency and certainty of operation and the fact that it is a balanced valve.

The steam pumping-engine equipped with my invention will be operated in the customary manner; but with my invention present the action of the pump will be rendered more efficient and desirable. In the use of my invention the pump does not have to depend on the suction created by the plunger to lift the water and fill the pump-cylinder, which suction is frequently inadequate, since on each backward stroke of the plunger the valve 16 ermits the auxiliary vacuum to act directly t rough said cylinder and cause the latter to become completely filled with water. An important effect of the auxiliary vacuum is that thereby all air is removed from the pump-cylinder during each backward stroke of the plunger. My invention therefore comprises means independent of the pump-plunger for creating a vacuum within the pump-cylinder sufficient to completely fill the latter with water and automatic valve mechanism for controlling the action of the vacuum, such valve mechanism acting in concert with the mechanism of the pum hat I claim as my invention, and desire to secure by Letters Patent, is-

1. A steam pumpingengine having its pump-cylinder connected with means for creating therein, independently of the suction' produced by the pump-plunger therefor,

a vacuum adapted to insure the filling of said cylinder with water during the backward strokes of said plunger, mechanism for conum adapted to insure the filling of said cylinder with water during the backward strokes of said plunger, combined with valve mechanism for controlling the communication between said cylinder and the vacuumproducing means, and connections between said valve mechanism and the operative parts of the engine; substantially as set forth.

3. In a steam pumping-engine, a connection leading from the pump cylinder to means for creating a vacuum for filling the cylinder with water. durin the back strokes of the pump-plunger, a va V6 in said connection for controlling the same, and means operable from a moving part of the machine for actuating said valve; substantially as set forth.

4. In a steam pumping-engine, a connection leading from the pump cylinder to means for creating a vacuum therein for filling the cylinder with water durin the back strokes of the pump-plunger, a va ve in said connection for controlling the same, means operable from a moving part of the machine for o ening said valve, and means for eflecting t e closing of said valve; substantially as set forth. v

5. In a steam pumping-engine, aconnection leading from the pump cylinder to means'for creating a vacuum therein for filling the cylinder with water during the back strokes of the pump-plunger, a valve in said connection for controlling the same, means operable from a moving part of the machine for opening said valve, means for closing said valve, and means for adjusting the point at which said valve may be released to close; substantially as set forth.

Signed at New York city, in the county of New York and State of New York, this 25th day of September, A. D. 1905.

. JOHN A. GROSHON. 

